# Pulsing gradient button

> A gradient button whose colored shadow slowly breathes in and out, all the time.

- Category: [Buttons](https://library.aimran.es/components/buttons)
- Built with: HTML + CSS
- Live editor: https://library.aimran.es/blocks/uv-btn-pulse
- Library: AIMRAN Library (https://library.aimran.es), free, no sign-up, by Aimran Oukham

## Where to use it

A pulsing button keeps gently asking for attention, so give it the action that pays the bills: “Buy now” on a product page, “Book your stay” on a small hotel site or “Claim the offer” during a sale. The gradient and the breathing glow make a CSS pulse animation that is noticeable without blinking.

Use it once per page. If the layout already has a moving background or a carousel, the pulse will compete with them and lose. Close colors in the gradient look more refined; very different ones feel louder and more promotional.

## Code

### HTML

```html
<button class="uv-pulse">Buy now</button>
```

### CSS

```css
.uv-pulse {
  --c1: #0071e3;
  --c2: #8ec5ff;
  --s: 16px;
  /* tamaño */
  --k: 1;
  /* velocidad */
  --fg: #1d1d1f;
  /* texto */
  --bg: #f5f5f7;
  /* fondo */
}

.uv-pulse {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 600;
  line-height: 1;
  padding: 1em 2em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  color: #fff;
  background: linear-gradient(135deg,var(--c1),var(--c2));
  animation: uv-pulse calc(2s / var(--k)) ease-in-out infinite;
  transition: transform .3s cubic-bezier(.25,.1,.25,1);
}

.uv-pulse:hover {
  transform: scale(1.05);
}

.uv-pulse:active {
  transform: scale(.97);
}

@keyframes uv-pulse {
  0%,100% {
    box-shadow: 0 6px 20px -8px var(--c1);
  }
  50% {
    box-shadow: 0 10px 40px -4px var(--c1),0 0 0 6px color-mix(in srgb,var(--c2) 25%,transparent);
  }
}
```

### React

```tsx
import type { CSSProperties } from "react";

const css = `
.uv-pulse {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 600;
  line-height: 1;
  padding: 1em 2em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  color: #fff;
  background: linear-gradient(135deg,var(--c1),var(--c2));
  animation: uv-pulse calc(2s / var(--k)) ease-in-out infinite;
  transition: transform .3s cubic-bezier(.25,.1,.25,1);
}

.uv-pulse:hover {
  transform: scale(1.05);
}

.uv-pulse:active {
  transform: scale(.97);
}

@keyframes uv-pulse {
  0%,100% {
    box-shadow: 0 6px 20px -8px var(--c1);
  }
  50% {
    box-shadow: 0 10px 40px -4px var(--c1),0 0 0 6px color-mix(in srgb,var(--c2) 25%,transparent);
  }
}
`;

export default function BtnPulse() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <button className="uv-pulse">Buy now</button>
      </div>
    </>
  );
}
```

## Prompt for AI assistants

Paste this into ChatGPT, Claude, Cursor, v0 or Lovable to adapt the block to your stack (Tailwind, Vue, Svelte…):

````text
I want to add the “Pulsing gradient button” block (Buttons) from AIMRAN Library to my project.

## What it is
A gradient button whose colored shadow slowly breathes in and out, all the time.

## Chosen settings
- Main color: #0071e3
- Secondary color: #8ec5ff
- Size: 16px (from 12 to 24px)
- Speed: 1x (from 0.5 to 2x)
- Text: "Buy now"

## What I need
1. Add it to my project with the same look and animation as the reference code: same sizes, colours, radii, shadows, timings and easing.
2. It is built with plain HTML and CSS (the reference wraps it in a React component with its CSS). If my project uses something else (Vue, Svelte, Astro, plain HTML…), translate it without losing any behaviour. If I use Tailwind, turn the styles into classes; if not, keep the CSS in its own file.
3. Expose the settings above as props (or CSS variables) with those values as defaults.
4. Make it work well on phones: nothing that depends only on hover, touch targets of at least 44 px and no overflow on 320 px screens.
5. Make it look right in light and dark mode.
6. Keep it accessible: semantic HTML, roles and aria-* where needed, visible focus and keyboard support.
7. Respect prefers-reduced-motion: with reduced motion, no big animations but the same end result.

## Reference code
```tsx
import type { CSSProperties } from "react";

const css = `
.uv-pulse {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 600;
  line-height: 1;
  padding: 1em 2em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  color: #fff;
  background: linear-gradient(135deg,var(--c1),var(--c2));
  animation: uv-pulse calc(2s / var(--k)) ease-in-out infinite;
  transition: transform .3s cubic-bezier(.25,.1,.25,1);
}

.uv-pulse:hover {
  transform: scale(1.05);
}

.uv-pulse:active {
  transform: scale(.97);
}

@keyframes uv-pulse {
  0%,100% {
    box-shadow: 0 6px 20px -8px var(--c1);
  }
  50% {
    box-shadow: 0 10px 40px -4px var(--c1),0 0 0 6px color-mix(in srgb,var(--c2) 25%,transparent);
  }
}
`;

export default function BtnPulse() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <button className="uv-pulse">Buy now</button>
      </div>
    </>
  );
}
```

Give me the complete final code, ready to paste, and tell me in one line where to put it in my project.
````